Perhaps you should try some spelling variations:
yuan doing » un doing, fun doing, yuan ming
doing data » doing death, ring data
gene yang » gene bank
yang yang » wang yang, wang yan
long seo » hong seo, long des, long do
long ago » long arm
a gene » a genre, a gender, a gentle

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: yuan doing data a gene yang yang ((((long seo) OR (long ago))) OR (cong shu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan doing data a gene yang yang ((((long seo) OR (long ago))) or (cong shu)) ;~".
• Adding a wildcard symbol may retrieve word variants: yuan doing data a gene yang yang ((((long seo) OR (long ago))) or (cong shu)) ;*.